If
f
(
x
)
=
e
4
sin
x
−
cos
x
\displaystyle {f{{\left({x}\right)}}}={e}^{{{4}{\sin{{x}}}-{\cos{{x}}}}}
f
(
x
)
=
e
4
s
i
n
x
−
c
o
s
x
, find
f
′
(
x
)
\displaystyle {f}'{\left({x}\right)}
f
′
(
x
)
. Use exact values.
f
′
(
x
)
=
\displaystyle {f}'{\left({x}\right)}=
f
′
(
x
)
=
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